Wrench set Measuring tape Hammer Pliers Screw gun Weatherstrip Lubricant/Cleaner (WD-40). White Lithium Oil. Toothbrush. Flat blade screwdriver. Garage door rollers. Safety First. In order to make certain security while working on your garage, keep in mind to never ever eliminate the lift cord. If released, the garage cables are under severe tension and will cut like a blade.